I have counsel and strength for war... — Reports of Hezekiah’s speech. probably also of his negotiations with Egypt, had reached the ears of the Assyrian king. So Sennacherib. in his inscriptions, speaks of “the king of Egypt as a monarch who could not save those who trusted in him” (Smith, Assyrian Canon). The Pharaoh in this case was Shabatoka, or Sabaco II., the father of the Tir-hakah of Isa xxxvii 9, one of the Ethiopian dynasty that reigned in Egypt from B.C. 725-665.
Related Commentaries of Isaiah 36:5
Isaiah 36:5-6
5 I say, sayest thou, (but they are but vain words) I have counsel and strength for war: now on whom dost thou trust, that thou rebellest against me?
6 Lo, thou trustest in the staff of this broken reed, on Egypt; whereon if a man lean, it will go into his hand, and pierce it: so is Pharaoh king of Egypt to all that trust in him.